In a message dated 98-04-16 16:00:17 EDT, dboehler@TAOS.MIDWEST.NET writes:

<< Please  help.... >>

We'll do our best.

<< There is no system blockage.>>

How can you be sure? Have you tested all of the componants? A blocked
filter/drier causes this. Happened twice to me.

<<Does this unit have a high side cutout switch???>>

Yes. I don't have an '86 or a manual for one, but every other VW with a/c I've
owned essentially had Two. One was a SINGLE USE, emergency high pressure
release valve. Some cars have it near or on the receiver/filter unit. My
current Jetta has it on the inlet line to the condensor. It is a small plug
with an alloy insert. The alloy melts at a very specific temperature: a temp
attainable only at very high pressure.

The other, the one you are probably looking for, is part of the circuit
(typically) to  the clutch switch on the compressor. If the temp exceeds 120
degrees Celcius, acheivable only at excessesive pressure, the switch denies
ground to the compressor clutch.

<<If so where should it be located???  My unit has none. >>

Check again. For the releif valve, look up front, by the condensor. Follow the
HIGH pressure hose out of the compressor, and all the way up to the front to
the condensor. For the switch, look up front also, near the top of the
condensor. (These are guesses, and hopefully a 1986 owner will set you
straight)

The bentley book shows a pipe with a high pressure and a low pressure cutout
switches.   I think I may have discovered why I had some hoses weeping.    >>

Depending on which hoses you are talking about, and when they are "weeping",
this would be completely normal. Condensation in the summer collects on the
cool tubing leading to the evaporator. This is probably unrelated, and not
indicative of  any pressure problem in your system.

gmbulley
cary, nc